<template>
  <div class="app-container">
    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
            type="primary"
            plain
            icon="Upload"
            @click="handleImport"
        >导入</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
            type="warning"
            plain
            icon="Download"
            @click="handleExport"
        >导出</el-button>
      </el-col>
      <right-toolbar></right-toolbar>
    </el-row>

    <el-table
        :data="categoryList"
        style="width: 100%"
        row-key="id"
        border
        lazy
        :load="fetchData"
        :tree-props="{ children: 'children', hasChildren: 'hasChildren' }"
    >
      <el-table-column prop="name" label="分类名称" />
      <el-table-column prop="imageUrl" label="图标" #default="scope">
        <img :src="scope.row.imageUrl" width="50" />
      </el-table-column>
      <el-table-column prop="orderNum" label="排序" />
      <el-table-column prop="status" label="状态" #default="scope">
        {{ scope.row.status == 1 ? '正常' : '停用' }}
      </el-table-column>
      <el-table-column prop="createTime" label="创建时间" />
    </el-table>




    <el-dialog :title="upload.title" v-model="upload.open" width="400px" append-to-body>
      <el-upload
          ref="uploadRef"
          :limit="1"
          accept=".xlsx, .xls"
          :headers="upload.headers"
          :action="upload.url + '?updateSupport=' + upload.updateSupport"
          :disabled="upload.isUploading"
          :on-progress="handleFileUploadProgress"
          :on-success="handleFileSuccess"
          :auto-upload="false"
          drag
      >
        <el-icon class="el-icon--upload"><upload-filled /></el-icon>
        <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
        <template #tip>
          <div class="el-upload__tip text-center">
            <div class="el-upload__tip">
              <el-checkbox v-model="upload.updateSupport" />是否更新已经存在的用户数据
            </div>
            <span>仅允许导入xls、xlsx格式文件。</span>
            <el-link type="primary" :underline="false" style="font-size:12px;vertical-align: baseline;" @click="importTemplate">下载模板</el-link>
          </div>
        </template>
      </el-upload>
      <template #footer>
        <div class="dialog-footer">
          <el-button type="primary" @click="submitFileForm">确 定</el-button>
          <el-button @click="upload.open = false">取 消</el-button>
        </div>
      </template>
    </el-dialog>


  </div>
</template>

<script setup name="Category">

import { treeSelect } from '@/api/product/category'
import { getToken } from '@/utils/auth.js'


const { proxy } = getCurrentInstance();

//表格数据
const categoryList = ref([]);

const data = reactive({
  queryParams: {

  },
  upload:{
    title: null,
    open: false,
    headers: {
      Authorization: 'Bearer '+getToken()
    },
    url: import.meta.env.VITE_APP_BASE_API +'/product/category/import',
    updateSupport: false, //是否更新已有数据，暂时业务不用这个
    isUploadding: false
  }
})

const {queryParams,upload}  = toRefs(data)

function getList(parentId){
  treeSelect(parentId).then(result=>{
    categoryList.value = result.data
  })
}

getList(0);


//数据列表
const fetchData = async (row, treeNode, resolve) => {
  console.log(row)
  console.log(treeNode)

  // 向后端发送请求获取数据
  const { code,msg,data } = await treeSelect(row.id);

  // 返回数据
  resolve(data)
}

//导出Excel
function handleExport(){
  proxy.download("product/category/export",{
    ...queryParams.value,
  }, `category_${new Date().getTime()}.xlsx`);
}

//导入Excel
function handleImport(){
  upload.value.open = true;
  upload.value.title = '导入分类数据'
}

//文件上传过程
function handleFileUploadProgress(){
  upload.value.isUploadding = true  //上传过程中，不能再点击上传组件页面的按钮
}

//文件上传成功后
const handleFileSuccess = (response, file, fileList) => {
  upload.value.open = false;
  upload.value.isUploading = false;
  proxy.$refs["uploadRef"].handleRemove(file);
  proxy.$alert("<div style='overflow: auto;overflow-x: hidden;max-height: 70vh;padding: 10px 20px 0;'>" + response.msg + "</div>", "导入结果", { dangerouslyUseHTMLString: true });
  getList(0);
};

//下载模板
function importTemplate(){
  //临时解决方案：
  proxy.download("product/category/export",{
    ...queryParams.value,
  }, `category_${new Date().getTime()}.xlsx`);
}

function submitFileForm(){
  //proxy.$refs['uploadRef'].submit()
  proxy.$refs.uploadRef.submit()
}

</script>